Illustrative telegraphy.



'N. S. AMSTUTZ.

ILLUSTRATIVE TELEGRAPHY. APPLICATION FILED AUG. 30, 1901.

1,01,43. Patented Mar. 5,1912.

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UNITED sir-Ar as PATENT OFFICE.

NbAH S. AMSTUTZ, OF CLEVELAND, OHIO.

ILLUSTRATIVE TELEGBAPHY.

To all whom it may concern: a

Be it known that I, NOAH S; AMs'rU'rz, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Illustrative Telegraphy, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to the art of reproducing sketches, photographs, etc., 10-

cally or at a distance and is especially adapted to those methods which depend upon .the synchronic movement of the transmitting and recording instruments.

The object of the invention is to provide a simple method for synchronizing the apparatus at both stations with great frequency whreby the most perfect synchronism is obtained.-

In practicing this invention the electric impulses which affect the recording magnet perform in addition to this, the work of.

- an adaptation of apparatus to the purpose of this invention.

Figure 1 represents the transmitting apparatus. Fig. 2 represents the receiving or recording apparatus. Fig. 3 represents a horizontal section of part of the transmitting apparatus and taken on the line 3-3 of Fig. 1. Fig. 4 represents a developed view of a contact plate.

' Referring to the parts'by letter, A, represents a rotatable drum' which may be of a transparent material, such as glass. Upon which is feathered a sleeve E.

the shaft thereof is rigidly secured a belt pulley a and this belt pulley drives a pulley C, which in turn drives by means of bevel-gears c,- d, a vertical spindle This spindle has a reduced extension 6 upon A radial arm 6 is rigidly secured to the said sleeve E, and carries a small weight 6 and the tip 6 thereof is adapted to rotate in contact Specification of Letters Patent. Application filed August 30, 1901. Serial No. 73,813.

or binding post 9 Patented Mar. 5, 1912.

with the inner wall of a cylindrical box F.- The contact strip G may be wrapped on the inner wall of this box F and may be embedded in said wall, as shown, in Fig. 1; its lower edge 9 may lie near the bottom of said box and its extreme tip g may fall a little short of contact with the vertical edge 9 as shown; it is provided with a terminal The contact strip G may be insulated from the box F in any suitable manner, or the box itself may be formed of insulating material, as shown. The sleeve E is supported as shown, upon a loose collar H and a link 72. connects this collar with a pivoted lever h, to the opposite arm of which is secured the core 72. of the solenoid K and a small spring it normally supports the weight of this sleeve. Collars e, e limit the movement of the sleeve E.

Upon the surface of the drum A, to which reference has already been made, may be wrapped .a transparent representation B of the subject, which consists of celluloid or other transparent material, and adjacent to this transparency B may be mounted a se lenium cell N. An electric circuitn connects the base of this selenium cell with the coil n of the solenoid K and a battery n supplies current for the same.

It will be remembered that celenium has the remarkable quality of being affected by theamount of light shed upon it, in such a the passageof electric currents through it.

Now as the drum rotates, the selenium cell N is moved longitudinally thereof and a small pin hole 11. of the selenium cell will pass successively over all parts'of the surface; in this manner the current in the circuit n is made to vary with the variations of light and shade of the subject and the core 7L affects the sleeve E so as to raise or lower the same proportionally with the light and shade of the subject.

At the receiving station is provided a rotatable drum R which may be. driven continuously through the shaft 9 by means of a slip connection 1"; which slip connection may consist substantially of two disks 7' one of which is pressed against the other by means of a spring 7. Bevel-gears r transmit the rotation of this shaft to the drum R.

The gear-train O is driven by the shaft of' the, drum R and eventually drives the pinion 0 this pinion drives an armature or needle 0 rotatably mounted between the circumferentially disposed poles P; an electro-magnet M is provided adjacent to the. drum R, an armature m, cooperating therewith to control the movement of the record ing point m adjust-able stops m" limit the movement of the recording point and a small spring 057, constrains it normally in an extreme position. 1

-Upon the drum B may be secured asheet T of a recording material such as paper. A11 electric-circuit W- containing a source of current w connects in. series the bindin post l 9 on the contact strip Gr, the collar the poles P of the synchronizer and the electromagnet M. This circuit, J assing as it does, through the contact strip and the rotating arm 6 'will evidently be broken whenever said arm e is out of contact with the strip G and vice-versa, hence an impulsive current is propagated in the circuit w; this current in' cludes in series the coils p of the poles P, as shown. Furthermore as the height of this arm is affected directly by the actipn of the transparent representation B of the subject, upon the selenlum cell N, it follows thatthe duration of these impulses is directly conthe impulses themselves being trolled. The effect of changes of the duration of these impulses upon the recording magnet M and the recording point m causes an image of'the subject to be reproduced upon the'recording sheet T. This action results from the plcture or image impulses which. actuate the armature of the magnet M in a vibrating manner at a uniform rate,

of variable duration within the limits of the rate" of propagation.

Themagnets M record variably, i. 6. sometimes producing a wide and at other times a narrow record, similar to the effects roduced under patent issued to a'pplicant eb. 16th, 1897, #577,373. In this patent the use of a selenium cell is shownm connection with a subject having its half tones broken up into parallel lines of varying widths forming alternate o' aque' and transparent parts which affect t e selenium to a maximum. and minimum degree alternately, at v uniform rate,'though as stated the maximum or minimum effects may continue for variable eriods. In the instance cited the pitch of the lines or distance apart is uniform and the rotation being uniform the rate of propagationobviously-is uniform also. It is" also obvious that since the o aque and transparent portions vary in-width, the duration of theimpulses will be variable.

Referrin plication, the image'that is to be transmitted.

is'not broken up into lines but it is a .transarency or negative such as is well known I 51 thephotographicart. It does not have I any ordinarily visible grain reticulation or arbitrary black portions with transparent white -interstices between them, such as is found in the usual half-tone reproductions of photographs. This subject is placed upon thetransparent cylinder as shown and a source of illumination is provided which is carried through a small opening a and directed upon a selenium cell N which may be of any of the well known forms obtainable on the market, and it is immaterial, whether the source of illumination bewithin the drum as shown or without, and the selenium cell within, as one' form is the equivalent of the other.

The manner of recording the impulses is immaterial, as airinstance, a medium such as a sheet of celluloid may be used which has been coated with any suitable removable opaque material which will be scraped oil intermittently. as the drum rotates in front of the recording magnets, or a sensitive photograph fihn and suitable well known shutter arrangements operated by the magnets M may be used, or the specific method shown in the patent referred to can be utilized equally well.

The arrangement of the gear-train O is such that if the drum R were rotated at substantially the same rate as the transmitting drum A the armature orneedle 0 would pass between two successive poles P during the same intervals of time that successive imp ulsespass in the circuit W. Now should there be any tendency for the drum R to lag behind the transmitting drum the poles Will become energized or excited before the armature oreaches two of them and these two poles will exercise an attraction upon the armature and accelerate it; this acceleration will be communicated through the geartrain 0 back to -the drum R and it also will be accelerated. In like manner the drum R to the subject matter of this ap- .myself to the specific means shown as other is retarded when necessary. Within the drum A may be a source of. illumination a behind which may be provided a reflector a which is adapted to concentrate the light directly upon the selenium cell N.

The spindle E may be rotated at ahigh rate of speed and should it be desired to drive the spindle E at an even multiple of the velocity of the drum A \I accomplish this by furnishing the belt pulleys a and c with small spurs or projections a and a which engage with openingsin the belt, as will be understood. It will be manifest from the above that the impulses in the circuit W. serve not only to record an image of the subject, but also afford means for synchronizing the transmitting and receiving apparatus.

Itshould be understood that I do not limit means can be employed without departing ,from the spirit of my invention.

2- It'is of course obvious that asthe image 139 may not extend all the way around the drum there may be a blank space which, through the break in continuity of the strip G, between g and 9'", will continue to transmit periodic impulses at the same rate as those of the image proper, though of uniform duration, as nothing would be found on this portion of the drum to cause them to be time factor, with respect to their individual characteristics, within the limits of their rate of propagation. r

The recording magnets will record during each entire revolution of the drums and when not indicating combined synchronizing and image impulses they will record the synchronizing ones alone if the inductive and mechanical time constant of the recording magnets makes them responsive to the shortest recurring break in the circuit, which is however sufficient to effect the synchronizer magnets and thereby prevent the formation of errors that can become accumulative. A

What I claim is 1. The method of reproducing .photographs, or representations thereof, which consists in causing an electric current of 7 normal intensity to conform'to the varying image tonality of a pictorial subject and thereby transmit said image, in simultaneously by means of said current controlling the movement of the receiving and trans: mitting apparatus in a synchronous manner and in suitably recording said image.

2. The method of reproducing photographs, or representations thereof, which consists in causing the varying tonal or image characteristics of a pictorial subject to change the conditions of an electric current in conformity therewith without materially affecting its intensity, in utilizing the said electric current to synchronize the transmitting and recording apparatus and in suitably recording the received image.

3. The method of reproducing photographs or representations thereof, which consists in uslng the" same electric current to .simultaneously transmitan image of a pictorial subject, and synchronizing the transmitting and recording apparatus without materially changing the intensity of the for the devices to current and in suitably recording the transmitted image.

4. The method of reproducing photographs, or representations thereof, which consists in propagating electric impulses, in transmitting an image of a pictorial sub ject by means of said impulses, in synchronizing the apparatus by the said impulses without materially modifying the intensity of current and in suitably recording said image impulses.

5. The method of reproducing photographs, or representations thereof, which consists in propagating electric impulses of normal strength at a uniform rate, in trans mitting a pictorial image by means of said impulses, in simultaneously synchronizing the apparatus, and in suitably recording the transmitted image.

6. The method of reproducing photographs, or representations thereof, which consists in propagating electric impulses at a nniform rate, in varying the duration of sald impulses by means of a pictorial subject, in synchronizing the apparatus by means of said impulses and in suitably recording the same.

7, The method of reproducing photographs, or representations thereof, which consists in impressing an electric current by means of separate agencies, such as apictorial image and a continuous synchronous control acting independently of the image, the two agencies being coincident in effect as to rate and periodicity but differential as to modifications produced by the image, in

simultaneously transmitting the image and synchronously controlling its reproduction and in suitably recording the transmitted image.

8. The method of reproducing photographs, or representations thereof, which consists in continuously propagating electric impulses, in controlling the duration of said impulses by means of a pictorial subject, in

transmitting an image by means of said impulses, in synchronizing the apparatus by means of the same impulses and in suitably recording such impulses. v

9. The meth d of reproducing photographs, or representations thereof, which consists in continuously propagating electric impulses at a uniform rate and periodically varying duration, in utilizing the varying duration of said impulses to affect the recording of an image and in utilizing the uniformity of rate of said impulses to maintain equal progress of the transmitting and recording apparatus' 10. The method of reproducing photographs, or representations thereof, which consists in continuously propagating electric impulses at a uniform rate, in periodia recording instrument by' means of the duration of said impulses, in simultaneously affecting synchronizing ap aratus by means of the uniformityof rate of said propagagtions and in suitably-recording the same.

11. The method of reproducing photographs, or representations thereof, which consists in continuously propagating imsaid impulses by means of said subject, in

pulses in a circuit extraneous of that'included by a pictorial subject, in' modifying transmitting an image. by means of said modified impulses, in also maintaining synchronous movement of the transmitting and recording apparatus by means of all of the impulses and in suitably recording the trans mitted impulses.

12. The method of reproducing photographs, or representations thereof, which consists in continuously prppagating electric impulses at a uniform rate in a circuit extraneous of a pictorial subject, in varying the duration of said impulses by means of the subject, in recording an image of said subject by means of said impulses and in synchronizing the transmitting and receiv ing apparatus by the same impulses.

' 13."The method of reproducing photo- 'graphs,

or representations thereof, which consists 1n progressively moving a record- 1 mg "material with respect to an electrically -c1 )[ntrolled recording device,

7 1n propagating electric impulses of varying duration, in causin all of said electric impulses to successiveygand'simultaneously actuate the recording'device and a suitable synchronizer.

14. The method of reproducing photographs, or representations thereof, which consists is synchronously controlling the rate of':1iiovement of a recording surface, in directingthe synchronism by means of'an electric current of normal strength, in simultaneously causing the said, electric current to produce, a record, conformable to a pictorial subject without materially affecting its strength.

15. The method of reproducing photographs, or representations thereof, which consists 1n differentially moving arecording surface, in positively moving a means. of

control,.in actuating said means of control and producing a record by'means of electric impulses propagated at a uniform rate of varying duration conformably with a pictorial subject. 1 v

16. The method photographs, which consists in propagating electric imof reproducing sketches,

or representations thereof, 7

pulses independently. of the subject and varying the duration of said impulses by means of variations in light and shade of the subject, and suitably recording the same. 1

' 17. The method or reproducing sketches, photographs, or representations pulses of fundamental intensity extranethereof, 1

which consists in propagating electric im-.

ously of the subjectand selectively varying" the said impulses without affecting their intensity by meansof variations of light and shade of the subject, and suitably re cording the same.

18. The method of reproducing sketches,

photographs, which consists in propagating electric impulses normally of equal duration, and selectively varying the durationjof said imor representations thereof,

pulses by means ofthe light and shade of i thesubject, and suitably recording the same} posed subject thereby propagating an electrio current, in producing successive displacements between the subject and said device while continuously maintainingadefinite distance between them, and in suitably recording the variations of the electric our 7 rent. In testimony whereof I afiix my signature in presence of two witnesses.

NOAH S, AMSTUTZ.

Witnesses:

F. D. AMMEN, E. L. PARDEE: 

